Deep crustal structure across northeastern Tibet from P receiver functions
文献类型：期刊论文
| 作者 | Murodov, Davlatkhudzha4,5,6; Zhao, Junmeng6,7; Wang, Xin4; Murodov, Murodkhudzha3; Shah, Syed Tallataf Hussain2; Murodov, Azamdzhon1,8; Faizulloev, Shohnavaz8 |
| 刊名 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 341页码:9 |
| 关键词 | Crustal structure Receiver function Crustal composition Continental subduction Tibetan plateau |
| ISSN号 | 0031-9201 |
| DOI | 10.1016/j.pepi.2023.107048 |
| 英文摘要 | The uplift mechanism and deep crustal deformation of the northeast of the Tibetan plateau in response to the Cenozoic India-Asian collision are still poorly constrained. Previous studies linked the uplift mechanism of the northeast of Tibet to the southward underthrusting of the Asian mantle lithosphere and the northward subduction of the Indian plate; yet, the details of crustal properties and thickening mechanism beneath the northeast of Tibet remain controversial. To shed light on the uplift mechanism of the northeast of the Tibetan plateau, we present a detailed image of the crustal structure beneath northeastern Tibet using teleseismic P receiver functions from 54 temporary broadband seismic stations. The Moho beneath the Kunlun Shan reaches similar to 66 km but abruptly shallows to similar to 40 km at the conjunction of the Kunlun and Qaidam, marking the boundary of northern and central Tibet. The Moho has a convex shape beneath the Qaidam basin and gently undulates northward beneath the Qilian Shan, and substantially shallows to similar to 48-50 km under the Alashan block without any Moho offset. The undulating Moho and the absence of any Moho disturbance suggest that crustal thickening and shortening is the main driving mechanism for the northeastern plateau uplift. The average Vp/Vs ratio (similar to 1.75) beneath northeastern Tibet is indicative of a felsic to intermediate composition without a prominent low-velocity zone or low-viscosity channel in the middle to lower crust. Thus, the moderate crustal Vp/Vs ratio excludes the crustal channel flow as a primary uplift mechanism, implying that the horizontal crustal shortening and vertical thickening is responsible for creating the thick crust of northeastern Tibet. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001041333300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74640]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Murodov, Davlatkhudzha; Zhao, Junmeng |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 2.COMSATS Univ Islamabad, Dept Earth Sci, Abbottabad Campus KPK, Islamabad, Pakistan 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China 4.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Sci LATPE, Beijing, Peoples R China 6.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 7.Tibet Univ, Lhasa 850000, Peoples R China 8.Natl Acad Sci Tajikistan, Inst Geol Earthquake Engn & Seismol, Dushanbe, Tajikistan |
| 推荐引用方式 GB/T 7714 | Murodov, Davlatkhudzha,Zhao, Junmeng,Wang, Xin,et al. Deep crustal structure across northeastern Tibet from P receiver functions[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2023,341:9. |
| APA | Murodov, Davlatkhudzha.,Zhao, Junmeng.,Wang, Xin.,Murodov, Murodkhudzha.,Shah, Syed Tallataf Hussain.,...&Faizulloev, Shohnavaz.(2023).Deep crustal structure across northeastern Tibet from P receiver functions.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,341,9. |
| MLA | Murodov, Davlatkhudzha,et al."Deep crustal structure across northeastern Tibet from P receiver functions".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 341(2023):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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